Santa Cruz Shredders makes a single-stage heavy aluminum grinder that produces the smallest, fluffiest grind you've ever seen. It's equipped with an ultra-strong magnet which keeps this unit closed tightly as you grind. It has 36 cutting columns, each column tapered into a four-sided scalpel giving you 144 internal blades that cut smoothly.
I use a large single-stage Santa Cruz Shredder that has an incredibly strong magnet that keeps the shredder perfectly closed during shredding. It has 36 columns, each one sporting four razor sharp sides, or 144 cutting blades that make the smallest, fluffiest grind.
Downside: if you have big hands it can be hard to grip properly in order to turn it. To solve this problem, break up your week into smaller pieces with your fingers, which helps to avoid jamming.